Ventilated bicycle helmet



FIG. 1 is a front elevational view of a ventilated bicycle helmet showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view, the opposite side is a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a ventilated bicycle helmet, as shown and described. 